Floor-finishing apparatus



G. GEARY FLOOR FINISHING APPARATUS Filed Feb. 14, 1927 INVENTUR.

7 wheels. The frame is provided with ugs in Patented Dec. 11, 1928.

UNITED STATES GEORGE GEARYROF TORONTO, ONTARIO, CANADA,

FLOOR-FINISHING APPARATUS.

Application filedFebruarY 14, 1927. Serial 1i'o. 168,030.

This invention relates to floor finishing apparatus, and more particularly to floor polishers of the type employing an electrically driven rotary brush, and my object is to provide simple apparatus of this character m which the wear of the brush may be readily compensated, in which any oil dripping from the motor bearings is prevented from reaching the driving parts, and in which the hearings on the brush spindle are eas1ly assembled and positioned for mountlng on the frame.

I attain my objects by providing a frame at one end of which is journalled a brush and at the other end is mounted apair of round which the stems of the axle journals are threaded. By removing the axle and adjusting the journals therefor any wear on the brush bristles may be readily compensated for. k

The brush is driven by means of a friction disk from a motor. This' disk has a rubber face for engagement with the periphery of pastthe motor bearing from drippingon to.

the rubber of the dis On the brush spindle are mounted two roller bearings having their inner casings held in s aced relationship to one another by means 0% a distance sleeve disposed on the spindle. A distance collar disposed on the sleeve has its opposite ends in engagement with the outer casings of the ball bearings. A nut threaded on the spindle holds all the parts in'position so that the assembly may be readily inserted in a bored boss on the frame. A in passed through a recess in the distance ool ar and a hole in the boss secures the brush in position onthe frame:'- The constructions are hereinafter described more fully and are illustrated in the accompanying drawings in which Fig. 1 is a longitudinal section, partly in elevation, of the apparatus;

Fig. 2 a plan view of the underside thereof; and

Fig. 3 a perspective view of the fr ction disk.

. In the drawings like numerals of reference indicate corresponding parts in the diiferent The frame 1 of the apparatus isprovlded with a boss 2 having a-hole extending upi I a the rubber 12?. lower end of the armature shaft holds the wardly from the bottom thereof. The floor finishin upward y extending spindle 4 which has a shoulder 4 formed on its lower end. On the spindle are carried ball bearings 5 and 6 which are held in spaced relationship to one another by means of a distance sleeve 7 Whichis disposed on the spindle and has its ends in engagement with the inner casings 5 and 6 of the bearings 5 and 6. A distance collar 8 havin a transverse groove or recess 9 formed in its peripher is freely disposed on the sleeve. The en s of the collar engage the outer casings of the bearings 5 and 6. A. nut 10 threaded on the upper end of thespindle holds .all these parts in position thereon so that the assembled spindle and bearings may be inserted in the bore of the boss, To removably secure the parts in the boss, 9. pin 11 is passed transversely there-' through to engage the recess 9 in the distance collar 8. The sleeve 7 rotates with the spindle and the inner casings of the ball bearings and prevents the nut 10 from being so tightened that it could shift the ball races of the It also disupward thrust equally to both bearing 6 out of alinement. tributes any bearings. I

The brush is rotated by means of a friction disk 12secured to the lower end of the armature shaft 13 of a motor 14. The disk is rubber faced for frictional engagement with ing 14 is prevented, by means of a cuptool, shown as a brush 3, has an shaped device 15 carried on top of the friction I disk, from dripping on to the rubber of the latter. The friction disk comprises a sleeve 16 adapted to receive the end of the armature shaft. The upper end of the sleeve is.

counterbored to receive the enlarged portion 13 of the shaft and is provided with a head under which is fitted a washer 17. The de-v vice 15, and the rubber 12 are disposed on the sleeve with the former lying between the upper surface of the rubber and the under surface of the washer 17. These parts are held tightly in position by displacingthe metal at the lower end of the sleeve against a washer 18 which engages the lower end of A nut 19 threaded on the running down the face of the diskand also serves as a distributor to throw the oil upwardly by centrifugal force away from the rubber disk and its eo-operating face with the brush.

To take up any wear on the friction disk, the motor is adjustably carried, by means of bolt and slot connections 20, on the frame 1. A screw 21 threaded through the frame is adapted to shift the motor towards the brush when the bolts are loosened.

At the end of the frame remote from the brush are two lugs 22 in which are threaded the stems 23 of axle journals 24:. \Vhen the axle 25, which carries the ground wheels 26, is passed through the journals they are prevented from turning in the lugs. Any wear on the brush bristles may be readily compensated by removing the axle and adjusting the journals therefor. This arrangement ensures an even wear on the brush bristles.

A fork s7 journallcd on the axle 25 carries the handle (not shown) and is adapted to engage the underside of the frame in front of the axle to limit the swinging movement of the-frame relativeto the fork when the device is being carried. This engagement also )ermits the pressure of the brush against the oor to be varied.

What I claim is:

'21 finishing tool journalled on the frame; a

friction disk carried on the shaft and adapted to drive the tool; bolts passed throughthe slots for 'adjustably securing the motor to the frame; and a screw threaded through the frame for moving the motor towards the tool when the bolts are loosened.

2. In floor finishing apparatus the combination of a frame; a motor provided with a depending armature shaft; a finishing tool journalled on the frame; a friction disk adapted to drive the tool comprising a sleeve carried on the shaft and provided with a head; a washer disposed on the sleeve for engagement with the head; a cup-shaped device disposed on the sleeve for engagement with the washer, a rubber annulus disposed on the sleeve for engagement with the cupshaped device; means for holding the cupshaped device tightly between the annulus and the washer; and means for holding the sleeve on the shaft.

Signed at Toronto Canada, this 8th day of February 1927.

GEORGE GEARY. 

